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Make] Projects 

hhiiilH ho/ 1 !/ tuMaal/ chare r\icf*f\\tat* 

build, hack, tweak, share, discover,- 


Written By: Duane Mackey 



small drill bit or crafting punch, scissors, 
hammer (1) 

2 small rivets, thin cardboard, paper, 
glue.glue or (1) 

Thin cardboard can be replaced with 
other, similar material 


I design home additions. Knowing the pitch of a roof is a critical step in designing an addition 
or estimating roof areas for shingles, insulation and ventilation requirements. Figuring the 
roof area is a lot easier and safer with this tool. 

© Make Projects 

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Step 1 — RoofGuessEstimator 

• This is a unique and simple tool 
that makes estimating roof areas 
and roof pitch easy and safe. 

• Glue to card stock, drill or punch 
holes and fasten together with 
small rivets or screw post binders 
from the hardware store. 

Step 2 

duano's RoofGuessEstimator 

RoofG uessEsti mator 

20 19 IS 17 IS 15 14 13 15 11 10 9 

7 6 5 4 3 2| 

UrigM mm* Roof pin* factw 

■r-^> n — i 

[| vwcim h | | lmhuh | [ 



.:.-.:=: Sis 8 la si is ip 

Roof G uessEsti mato r 

20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 & 4 3 2 1^ 

L*9fi x wttK Rwl pitch factor* ^^ 



■ * i 1* 

Print and glue ihis page to stiff 
posterboard or thin stiff cardboard, 
laser prinl for durability, protect ink 
iel prints with a clear tape 
overlay, A rolary trimmer cuts best 

drill or pyiKh accuse- holes wed for 
small vft/tts or rivets or screw post binders. 

fasten together with washer/ 

To use: Hold the RoofGu&ssEslimalor level and slide ina free end 

the roof . Tba corresponding number in the sight window (on ihe fm 

the roof. 

To detenmina rool area: 

Simply (Multiply) Ihe measured Length by Ihe Width uf Ihe hotis* 

* the roof wertiangs) = HOW HOUSE area in sq ft ftn 

Multiply Ihis (House) foot prinl ar&a (mm) by Ihe corresponding Pit 

• Download and print out the PDF 

• [ 
id=0B0kie4y... | 

© Make Projects 

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Step 3 

• OK, if you really would like to give 
this and want to make it as good 
and durable as possible, go to a 
copy center like Staples or 
OfficeMax and have it printed in 
color on No-Tear paper. It really is 
the best; it costs about $1 .50 and 
is worth every penny. Also try to 
find some thin vinyl (re-purposed) 
rather than card stock for the 
backing material. I have not tried it 
yet but hot laminating with 5 or 10 
mil and cutting it at the copy center 
would work nicely, I think. 

Print out the PDF, Glue to card stock, drill or punch holes, fasten together with small rivets or 
screw post binders from the hardware store 

This document was last generated on 201 2-1 2-02 01 :43:49 PM. 

© Make Projects 

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